Revision as of 08:04, 1 August 2011 edit Nuwankumara (talk \| contribs) 19 edits →References ← Previous edit		Revision as of 08:04, 1 August 2011 edit undo Nuwankumara (talk \| contribs) 19 edits →Variants Next edit →
Line 31: [[NTT DoCoMo]] has already achieved 5 Gbit/s transmissions to receivers travelling at 10 km/h using its [[4G]] prototype system in a 100 MHz-wide channel. This [[4G]] prototype system also uses a 12x12 antenna [[MIMO]] configuration, and [[turbo coding]] for error correction coding.<ref>{{cite web\|url = http://www.nttdocomo.com/pr/2007/001319.html\|date=2007-02-09\|publisher=[[NTT DoCoMo]] Press\|title=DoCoMo Achieves 5 Gbit/s Data Speed}}</ref> Summary OFDMA with frequency spreading (MC-CDMA) \cite{Yee/Linnartz/Fettweis:1993} \cite{Fazel:1993} \cite{Chouly/Brajal/Jourdan:1993}. OFDMA with time spreading (MC-DS-CDMA and MT-CDMA) \cite{Dasilva/Sousa:1993} \cite{Vandendorpe:1995}. OFDMA with both time and frequency spreading (Orthogonal Frequency Code Division Multiple Access(OFCDMA)) \cite{Zhou/Tung/Wang/Higuchi/Sawahashi:2008}. ==References==

Multi-carrier code-division multiple access: Difference between revisions